US11569477B2ActiveUtilityPatentIndex 73

Display apparatus including multi-layered planarization layer

Assignee: SAMSUNG DISPLAY CO LTDPriority: Oct 17, 2019Filed: Aug 21, 2020Granted: Jan 31, 2023

Est. expiryOct 17, 2039(~13.3 yrs left)· nominal 20-yr term from priority

Inventors:SONG HEERIM LEE YUJIN KIM HAEMIN Lee Cheolgon

H01L 27/14678H01L 2251/5338H01L 27/3276H01L 27/3248H01L 51/5293G02F 1/133528H01L 27/3211G02F 1/133305G02F 1/136209G09F 9/301H01L 51/5253H01L 51/5246H01L 27/323G02F 1/133331H01L 51/0097G02F 1/133514G02F 1/133512H10K 59/8792H10K 59/38H10K 59/352H10K 59/126H10K 59/1216H10K 59/1213H10K 59/12H10K 50/865G09G 2380/02G09G 2330/02G06F 1/1652H10K 59/8791H10K 59/8731H10K 59/131H10K 50/844H10K 59/124H10F 39/198H10K 77/111H10K 50/805H10K 71/60H10K 59/122H10K 59/40H10K 59/35H10K 2102/311H10K 50/868H10K 50/8426H10K 59/123

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Claims

Abstract

A display apparatus includes: a substrate having a display area and a peripheral area outside the display area; a first conductive layer on the substrate in the peripheral area and comprising a first hole; a second conductive layer on the first conductive layer and overlapping the first conductive layer, the second conductive layer comprising a second hole; a planarization layer extending from the display area to the peripheral area and comprising at least two organic insulating layers between the first conductive layer and the second conductive layer; and a display element on the planarization layer in the display area, wherein a part of a portion of the second conductive layer except for the second hole is in contact with a part of a portion of the first conductive layer except for the first hole.

Claims

exact text as granted — not AI-modified

What is claimed is: 
     
       1. A display apparatus comprising:
 a substrate comprising a display area and a peripheral area outside the display area; 
 a first conductive layer on the substrate in the peripheral area and comprising a first hole; 
 a second conductive layer on the first conductive layer and overlapping the first conductive layer in the peripheral area, the second conductive layer comprising a second hole; 
 a planarization layer extending from the display area to the peripheral area and comprising at least two organic insulating layers between the first conductive layer and the second conductive layer; and 
 a display element on the planarization layer in the display area, 
 wherein a part of a portion of the second conductive layer except for the second hole is in contact with a part of a portion of the first conductive layer except for the first hole. 
 
     
     
       2. The display apparatus of  claim 1 , wherein the planarization layer comprises a first organic insulating layer comprising a third hole, and a second organic insulating layer on the first organic insulating layer and comprising a fourth hole, wherein the second hole of the second conductive layer is offset from the first hole of the first conductive layer,
 the third hole of the first organic insulating layer and the fourth hole of the second organic insulating layer are offset from the first hole of the first conductive layer and the second hole of the second conductive layer, and 
 the second conductive layer is in contact with the first conductive layer where the third hole of the first organic insulating layer overlaps the fourth hole of the second organic insulating layer. 
 
     
     
       3. The display apparatus of  claim 2 , wherein a size of the third hole of the first organic insulating layer is different from a size of the fourth hole of the second organic insulating layer. 
     
     
       4. The display apparatus of  claim 1 , wherein the planarization layer comprises a first organic insulating layer comprising an insulating pattern overlapping the first hole of the first conductive layer, and a second organic insulating layer on the first organic insulating layer,
 the second organic insulating layer comprises a fourth hole offset from the first hole of the first conductive layer and the second hole of the second conductive layer, the fourth hole being arranged around the insulating pattern of the first organic insulating layer, 
 the second hole of the second conductive layer is offset from the first hole of the first conductive layer, and 
 the second conductive layer is in contact with the first conductive layer at a position of the fourth hole of the second organic insulating layer. 
 
     
     
       5. The display apparatus of  claim 1 , wherein the planarization layer comprises a first organic insulating layer comprising an insulating pattern overlapping the first hole of the first conductive layer, and a second organic insulating layer on the first organic insulating layer,
 the second organic insulating layer comprises a fourth hole offset from the first hole of the first conductive layer and the second hole of the second conductive layer, the fourth hole being arranged around the insulating pattern of the first organic insulating layer, 
 the second hole of the second conductive layer overlaps the first hole of the first conductive layer, and 
 the second conductive layer is in contact with the first conductive layer at the fourth hole of the second organic insulating layer. 
 
     
     
       6. The display apparatus of  claim 1 , wherein the display element comprises a first electrode on a same layer as the second conductive layer, a second electrode facing the first electrode, and an emission layer between the first electrode and the second electrode, and
 the second electrode extends to the peripheral area. 
 
     
     
       7. The display apparatus of  claim 6 , further comprising an insulating layer covering an edge of the first electrode of the display element in the display area and comprising an insulating pattern overlapping the second hole of the second conductive layer in the peripheral area,
 wherein the second electrode of the display element is in contact with the second conductive layer. 
 
     
     
       8. The display apparatus of  claim 6 , further comprising a thin-film transistor electrically connected to the first electrode of the display element in the display area; and
 a power supply line in an area between an end portion of the second electrode of the display element and an edge of the substrate in the peripheral area, 
 wherein an end portion of the first conductive layer is in contact with the power supply line, and an end portion of the second conductive layer is in contact with the end portion of the first conductive layer. 
 
     
     
       9. The display apparatus of  claim 1 , wherein a window above the substrate and the display element is flexible so that the display area is folded or curved. 
     
     
       10. The display apparatus of  claim 1 , wherein the planarization layer comprises a first organic insulating layer comprising a first organic material, and a second organic insulating layer comprising a second organic material that is different from the first organic material. 
     
     
       11. A display apparatus comprising:
 a substrate comprising a display area and a peripheral area outside the display area; 
 a first conductive layer on the substrate in the peripheral area and comprising a first hole; 
 a second conductive layer on the first conductive layer and overlapping the first conductive layer in the peripheral area, the second conductive layer comprising a second hole; 
 a first organic insulating layer extending from the display area to the peripheral area and arranged between the first conductive layer and the second conductive layer in the peripheral area; 
 a second organic insulating layer on the first organic insulating layer, wherein a portion of the second organic insulating layer in the peripheral area is removed; and 
 a display element on the second organic insulating layer in the display area, 
 wherein a part of a portion of the second conductive layer except for the second hole is in contact with a part of a portion of the first conductive layer except for the first hole. 
 
     
     
       12. The display apparatus of  claim 11 , wherein the second hole of the second conductive layer overlaps the first hole of the first conductive layer,
 the first organic insulating layer comprises an insulating pattern overlapping the first hole of the first conductive layer, and 
 the second conductive layer is in contact with a portion of the first conductive layer that is not covered with the insulating pattern of the first organic insulating layer. 
 
     
     
       13. The display apparatus of  claim 11 , wherein the second hole of the second conductive layer is offset from the first hole of the first conductive layer,
 the first organic insulating layer comprises a third hole that is offset from the first hole of the first conductive layer and the second hole of the second conductive layer, and 
 the second conductive layer is in contact with the first conductive layer at a position of the third hole of the first organic insulating layer. 
 
     
     
       14. The display apparatus of  claim 11 , wherein the second hole of the second conductive layer overlaps the first hole of the first conductive layer,
 the first organic insulating layer comprises a third hole that is offset from the first hole of the first conductive layer and the second hole of the second conductive layer, and 
 the second conductive layer is in contact with the first conductive layer at a position of the third hole of the first organic insulating layer. 
 
     
     
       15. The display apparatus of  claim 11 , wherein the display element comprises a first electrode on the second organic insulating layer, and a second electrode facing the first electrode and extending to the peripheral area. 
     
     
       16. The display apparatus of  claim 15 , further comprising an insulating layer covering an edge of the first electrode of the display element in the display area and comprising an insulating pattern overlapping the second hole of the second conductive layer in the peripheral area,
 wherein the second electrode of the display element is in contact with the second conductive layer. 
 
     
     
       17. The display apparatus of  claim 15 , further comprising a power supply line between an end portion of the second electrode and an edge of the substrate,
 wherein an end portion of the first conductive layer is in contact with the power supply line, and an end portion of the second conductive layer is in contact with the end portion of the first conductive layer. 
 
     
     
       18. The display apparatus of  claim 11 , wherein a window above the substrate and the display element is flexible so that the display area is folded or curved. 
     
     
       19. The display apparatus of  claim 11 , wherein the first organic insulating layer comprises a first organic material, and
 the second organic insulating layer comprises a second organic material that is different from the first organic material. 
 
     
     
       20. A display apparatus comprising:
 a substrate comprising a display area and a peripheral area outside the display area; 
 a first organic insulating layer on the substrate in the display area and the peripheral area; 
 a first conductive layer on the first organic insulating layer in the peripheral area and comprising a plurality of first holes; 
 a second organic insulating layer covering the first conductive layer and on the first organic insulating layer; 
 a third organic insulating layer on the second organic insulating layer; 
 a second conductive layer on the third organic insulating layer in the peripheral area and comprising a plurality of second holes, centers of the plurality of second holes of the second conductive layer being offset from centers of the plurality of first holes of the first conductive layer; and 
 a display element on the third organic insulating layer in the display area.

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